Summer is Coming! Join the Game of Timers Competition to Win Epic Prizes. Registration is Open. Game starts Mon July 1st.

 It is currently 18 Jul 2019, 20:55

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Exactly 71 people are standing in a single queue

Author Message
TAGS:

### Hide Tags

Retired Moderator
Joined: 22 Aug 2013
Posts: 1435
Location: India
Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

23 Feb 2018, 11:16
1
00:00

Difficulty:

55% (hard)

Question Stats:

64% (02:03) correct 36% (02:01) wrong based on 51 sessions

### HideShow timer Statistics

Exactly 71 people are standing in a single queue outside a store on black Friday. If these 71 people also include Daniel and Maria, then how many people are standing in front of Maria in the queue?

(1) When counted from the back of the queue, Daniel is at 19th position and there are exactly 7 people between Daniel and Maria.

(2) The number of people in front of Maria in the queue are 18 more than the number of people behind Maria in the queue.
Retired Moderator
Joined: 25 Feb 2013
Posts: 1197
Location: India
GPA: 3.82
Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

23 Feb 2018, 11:27
amanvermagmat wrote:
Exactly 71 people are standing in a single queue outside a store on black Friday. If these 71 people also include Daniel and Maria, then how many people are standing in front of Maria in the queue?

(1) When counted from the back of the queue, Daniel is at 19th position and there are exactly 7 people between Daniel and Maria.

(2) The number of people in front of Maria in the queue are 18 more than the number of people behind Maria in the queue.

Statement 1: Provides Daniel's position but we do not know whether Maria is in front or behind Daniel. In wither case number of people standing in front of Maria will be different. Hence Insufficient

Statement 2: if number of people behind Maria is $$x-18$$, then number of people in front of Maria will be $$x$$

so we have $$x+x-18=70 => x=44$$. Sufficient

Option B
Senior PS Moderator
Joined: 26 Feb 2016
Posts: 3360
Location: India
GPA: 3.12
Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

23 Feb 2018, 11:38
1
Exactly 71 people are standing in a single queue outside a store on black Friday. If these 71 people also include Daniel
and Maria, then how many people are standing in front of Maria in the queue?

(1) When counted from the back of the queue, Daniel is at 19th position and there are exactly 7 people between Daniel and Maria.
This statement is not enough as Maria could be 7 places before/after Daniel.
We cannot arrive at a unique answer for the total number of people ahead of Maria (Insufficient)

(2) The number of people in front of Maria in the queue are 18 more than the number of people behind Maria in the queue.
It x is the position she is at from behind the queue, then 18+x+1+x = 71.
2x + 19 = 71 -> x = 26
So basically, she must be at the 45(18+26)th position in the queue (Sufficient - Option B)
_________________
You've got what it takes, but it will take everything you've got
Manager
Joined: 26 Sep 2016
Posts: 59
Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

23 Feb 2018, 15:43
St 1 is not sufficient as we don't know whether Mary is in front of or behind Daniel in the queue.
St 2 is sufficient as we can set an equation using : x+18 people in front of Mary, x people behind Mary
In total there will be x+18+Mary+x = 71
2x=71-19 ,
x=26 , so there are 26+18 people are in front of Mary
Manager
Joined: 23 Sep 2016
Posts: 237
Re: Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

27 Feb 2018, 01:16
amanvermagmat wrote:
Exactly 71 people are standing in a single queue outside a store on black Friday. If these 71 people also include Daniel and Maria, then how many people are standing in front of Maria in the queue?

(1) When counted from the back of the queue, Daniel is at 19th position and there are exactly 7 people between Daniel and Maria.

(2) The number of people in front of Maria in the queue are 18 more than the number of people behind Maria in the queue.

IMO B
statement 1 we don't know whether maria is in front or back of daniel.
statement 2 tell us exact place of maria by telling us number of people in front and back of her.
Intern
Joined: 16 Jan 2018
Posts: 11
Concentration: Strategy, General Management
GMAT 1: 630 Q48 V28
GPA: 3.5
Re: Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

27 Feb 2018, 02:59
B.
1 states the position of Daniel, and the people between him and Maria but she may be in front of him or behind. Hence, not sufficient. BCE

2. This statement can lead to the exact location of Maria by establishing an equation between behind and front people. Hence, sufficient.

Sent from my [device_name] using [url]GMAT Club Forum mobile app[/url]
Math Expert
Joined: 02 Sep 2009
Posts: 56257
Re: Exactly 71 people are standing in a single queue  [#permalink]

### Show Tags

28 Feb 2018, 00:11
amanvermagmat wrote:
Exactly 71 people are standing in a single queue outside a store on black Friday. If these 71 people also include Daniel and Maria, then how many people are standing in front of Maria in the queue?

(1) When counted from the back of the queue, Daniel is at 19th position and there are exactly 7 people between Daniel and Maria.

(2) The number of people in front of Maria in the queue are 18 more than the number of people behind Maria in the queue.

Similar questions:
https://gmatclub.com/forum/the-people-i ... 43447.html
https://gmatclub.com/forum/john-and-ter ... 34737.html
https://gmatclub.com/forum/charissa-and ... 32026.html
https://gmatclub.com/forum/jim-and-heat ... 91312.html
https://gmatclub.com/forum/esteban-is-i ... 89967.html
https://gmatclub.com/forum/bruce-john-l ... 35925.html
https://gmatclub.com/forum/there-are-n- ... 91876.html
https://gmatclub.com/forum/how-many-peo ... 18883.html
https://gmatclub.com/forum/tom-and-jack ... 16745.html
https://gmatclub.com/forum/exactly-n-pe ... 60340.html
https://gmatclub.com/forum/pam-and-ed-a ... 98651.html
https://gmatclub.com/forum/how-many-peo ... 02179.html
https://gmatclub.com/forum/how-many-peo ... 54868.html
_________________
Re: Exactly 71 people are standing in a single queue   [#permalink] 28 Feb 2018, 00:11
Display posts from previous: Sort by